docs: def clear_cached_authc_info(self, identifier):
          """
          When cached credentials are no longer needed, they can be manually
          cleared with this method.  However, account credentials may be
          cached with a short expiration time (TTL), making the manual clearing
          of cached credentials an alternative use case.
  
          :param identifier: the identifier of a specific source, extracted from
                             the SimpleIdentifierCollection (identifiers)
          """
          msg = "Clearing cached authc_info for [{0}]".format(identifier)
          logger.debug(msg)
  
          self.cache_handler.delete('authentication:' + self.name, identifier)